Che Concholomsts Exchange. 
COPYRIGHT SECURED. 
Vou. II. 
INO; 2. 
CHESTNUT HILL, PHILADELPHIA, PA., AUGUST, 1887. 
A Publication Designed for Conchologists and 
Scientists generally. 
ISSUED MONTHLY 
BY 
WM DW AVERELL, 
Epitor anp PuB.isHer. 
4a5- Correspondence upon Conchology, as well as 
reliable items of interest concerning the Mollusca, 
their habits, localities, ete., kindly solicited from all. 
Matter for publication must be received by the 
tenth of each month, 
TERMS: 
Subscription, Volume II. - - 
Single copies, 5 cents each. 
Remittance should be sent by Money Order, Postal 
Note, or by Registered Letter. Unused United 
States Postage Stamps will be received in any 
amount in payment of bills. 
Address all correspondence to 
WM. D. AVERELL, 
Editor and Publisher, 
Chestnut Hill. 
50 cts. 
Philadelphia, Pa., U.S. A. 
ADVERTISING RATES. 
One inch, displayed, 1 month..... ..$ 50 
One inch, displayed, 3 months......... . 1 00 
One-half column, displayed, 1 month... 2 00 
One-half column, displayed, 3 months. 4 00 
One column, displayed, ] month.......... 4 00 
One column, displayed, 3 months......... 8 00 
Entered at the Post-office at Philadelphia, Pa., as 
second-class matter. 
SUBSCRIPTIONS TO VOLUME II ARE NOW 
DUE. FOR EXPIRATION OF SUBSCRIPTION SEE 
DATE ON WRAPPER. 
N arecent letter from our friend, Professor 
Josiah Keep, of California, he expressed the 
hope that some competent person would 
write a history of “East Coast Shells’ as a 
companion yolume to “ West Coast Shells,” 
just issued by him. It is to be hoped that, 
should such a work be designed, it will be 
edited for the express purpose of instructing 
beginners in the study of the Conchology of 
the Atlantic Coast of the United States; for 
therein, coupled with the evident design of the 
author to make himself clearly understood, lies 
the charm in Professor Keep’s useful little 
work. To complete the trio, why may we not 
have Gulf Coast Shells? Who would have 
honor thrust upon him? To earn the lasting 
gratitude of the rising generation is meat and 
drink indeed. 
A VERY novel way of pleasing poor children, 
the bed-ridden sick, and others needing amuse- 
ment combined with instruction, and not hav- 
ing the means to secure it, has been tried with 
success in London. This is the distribution of 
several thousand packages of shells by a So- 
ciety formed for the purpose. Go and do like- 
wise. 
WE will print in next number, “On the 
Distribution of Land and Fresh Water Shells 
in the Tropics,” a paper of high merit, by Mr. 
Charles T. Simpson, whose successful researches 
in Southern waters haye been chronicled in 
former numbers of our journal. 
Now that school-days are upon you, don’t 
forget that a little extra time at recess, or of 
evenings, in securing subscribers to THE CoNn- 
CHOLOGISTS’ EXCHANGE will greatly benefit 
you. Look at“Our Premium List” and be 
convinced. 
WRITE about Conchology for the young 
folks, and you will please first, the children’s 
parents; secondly, the “bairns”’ themselves; 
and thirdly, the children’s friend, THE Con- 
CHOLOGISTS’ EXCHANGE. 
WE have received several complaints about 
the non-receipt of back numbers. In every 
case these have been promptly sent, and if 
there is any fault to be found, it is with the 
mails. 
WELCOME to the Constitutional Centennial, 
September 15th, 16th and 17th. 
